Bump lxml from 4.6.4 to 4.7.1

[dependabot]

Bumps lxml from 4.6.4 to 4.7.1.

Changelog

Sourced from lxml's changelog.

4.7.1 (2021-12-13)

Features added

• Chunked Unicode string parsing via parser.feed() now encodes the input data to the native UTF-8 encoding directly, instead of going through Py_UNICODE / wchar_t encoding first, which previously required duplicate recoding in most cases.

Bugs fixed

• The standard namespace prefixes were mishandled during "C14N2" serialisation on Python 3. See https://mail.python.org/archives/list/lxml@python.org/thread/6ZFBHFOVHOS5GFDOAMPCT6HM5HZPWQ4Q/

• lxml.objectify previously accepted non-XML numbers with underscores (like "1_000") as integers or float values in Python 3.6 and later. It now adheres to the number format of the XML spec again.

• LP#1939031: Static wheels of lxml now contain the header files of zlib and libiconv (in addition to the already provided headers of libxml2/libxslt/libexslt).

Other changes

• Wheels include libxml2 2.9.12+ and libxslt 1.1.34 (also on Windows).

4.7.0 (2021-12-13)

• Release retracted due to missing files in lxml/includes/.

4.6.5 (2021-12-12)

Bugs fixed

• A vulnerability (GHSL-2021-1038) in the HTML cleaner allowed sneaking script content through SVG images.

• A vulnerability (GHSL-2021-1037) in the HTML cleaner allowed sneaking script content through CSS imports and other crafted constructs.

Commits

• 745ac26 Move zlib.h and friends into a subdirectory "extlibs" in lxml/includes/ to se...
• f0a575a Add a test to get at least minimal coverage for the lxml.html.builder module.
• 016be64 Remove useless macOS-M1 build target since there are currently no GHA build s...
• 3934435 Prepare release of lxml 4.7.1.
• 891f273 Do not overwrite the wildcard includes for the "lxml.includes" package when a...
• 4848bfc Make sure the apidocs are generated from the freshly built modules.
• bef75f9 Fix some doc links.
• 5c4f6a2 Prepare release of lxml 4.7.0.
• 68607a1 Merge branch 'lxml-4.6'
• a9611ba Fix a test in Py2.
• Additional commits viewable in compare view

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